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地震 ›› 1998, Vol. 18 ›› Issue (S1): 39-44.

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数字记录地磁脉动仪资料在地震预报中的应用前景①

龚绍京, 陈化然, 李文栋, 邓瑞成, 张存江   

  1. 中国天津 300201 天津市地震局
  • 收稿日期:1998-06-03 修回日期:1998-06-23 出版日期:1998-10-20 发布日期:2022-09-30
  • 作者简介:龚绍京,女,1938年9月出生,研究员,主要从事地震预报、地磁短周期变化等研究工作。
  • 基金资助:
    ①本项工作得到地震科学联合基金会和天津市地震局的资助

APPLICATION PROSPECT OF DATA OF DIGITAL GEOMAGNETIC PUISATION METER IN EARTHQUAKE PREDICTION

Gong Shaojing, Chen Huaran, Li Wendong, Deng Ruicheng, Zhang Cunjiang   

  1. Seismological Bureau of Tianjin Municipality, Tianjin 300201, China
  • Received:1998-06-03 Revised:1998-06-23 Online:1998-10-20 Published:2022-09-30

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摘要： 概述了用数字化地磁脉动仪资料计算复转换函数的技术路线和资料处理方法。给出了资料处理结果。由图看出,在没有地震的正常年份,转换函数围绕相当稳定的取值涨落。对于4级左右的地屣,只有周期较小的转换函数有异常反应。由于1~3天即可求一组转换函数,因此可应用此方法探察有无短临异常。

关键词: 地磁短周期变化, 复转换函数, 电性结构, 感应磁效应

Abstract: In this paper, the method for computing the complex transfer functions using the data of digital geomagnetic pulsation meter is described, and the result of data processing is given. From the figures we can see that during the normal period without earthquake occurrence, the transfer functions fluctuate around the stable values. As for earthquake with magnitude around 4,the transfer functions only with short periods have anomalous response. Because calculating a set of transfer functions requires data for only 1~3 days, it is possible to apply this method for searching the short-term and imminent anomalies.

Key words: Geomagnetic short-period variation, Complex transfer functions, Electric structure, Induced magnetic effect